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Q115200: MS-DOS-Based Apps May Not Time-Slice Well Under WFWG 3.11

Article: Q115200
Product(s): Microsoft Windows 3.x Retail Product
Version(s): WINDOWS:3.11
Operating System(s): 
Keyword(s): 
Last Modified: 27-OCT-1999

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The information in this article applies to:

- Microsoft Windows for Workgroups version 3.11 
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SYMPTOMS
========

When 32-bit file access is enabled and 32-bit disk access is not, your computer
does not accept keyboard input and then appears to stop responding (hang) in
either an MS-DOS Prompt session or in an MS-DOS-based application. After you
type a few characters, the machine appears to hang, and then the buffer empties,
effectively pasting your text into the application very quickly.

NOTE: Many machines are configured to behave this way (for example, those with
disk drive controllers that are not Western Digital (WD) 1003 compatible and
those using disk-compression schemes other than MS-DOS 6.2 DoubleSpace).

CAUSE
=====

When 32-bit file access is enabled without 32-bit disk access being enabled,
Windows for Workgroups 3.11 uses the real-mode mapper. Since the real-mode
mapper presents a synchronous interface to 32-bit file access, it prevents other
system events from occurring simultaneously with disk access. This problem
occurs when a large amount of data has accumulated in the cache and must be
flushed immediately because of a disk reset (CTRL+C) or critical error. During
the time that the data is being written to the drive, other system events are
ignored.

Additional query words: dblspace 3.11 key board delay wait hang hung freeze frozen dump flush buffer virtual machine machines develop time-slice problems rmm

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Keywords          :  
Technology        : kbAudDeveloper kbWFWSearch kbWFW311
Version           : WINDOWS:3.11

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